CN116734033B - Antitheft device for long stop well mouth - Google Patents
Antitheft device for long stop well mouth Download PDFInfo
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- CN116734033B CN116734033B CN202311030502.4A CN202311030502A CN116734033B CN 116734033 B CN116734033 B CN 116734033B CN 202311030502 A CN202311030502 A CN 202311030502A CN 116734033 B CN116734033 B CN 116734033B
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- valve
- antitheft
- oil well
- box
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- 239000003129 oil well Substances 0.000 claims abstract description 67
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 230000006378 damage Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004579 marble Substances 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003305 oil spill Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Burglar Alarm Systems (AREA)
Abstract
The application provides an anti-theft device for a long-stop well mouth, which comprises an anti-theft valve, an anti-theft box, a base and a magnetic anti-theft component, wherein one end of the anti-theft valve is connected with an oil well flange structure, the other end of the anti-theft valve is provided with a four-way joint, both ends of the anti-theft valve are provided with oil well anti-theft clamps, three ports of the four-way joint far away from the anti-theft valve are provided with anti-theft slip components, the anti-theft box is connected with the base in a detachable mode through the magnetic anti-theft component, an anti-theft cavity is formed between the anti-theft box and the base, and the anti-theft valve, the oil well flange structure and the four-way joint are arranged in the anti-theft cavity; according to the anti-theft device for the long-stop well wellhead, at least two anti-theft structures are arranged, so that the anti-theft performance of the well wellhead anti-theft device is improved, the well wellhead anti-theft device is difficult to destroy, the illegal molecule is prevented from stealing oil and gas resources, and the equipment such as a well wellhead sleeve and a valve is prevented from being stolen.
Description
Technical Field
The application relates to the technical field of oil extraction, in particular to an anti-theft device for a long-stop well head.
Background
Petroleum is a non-renewable resource substance, with the exploration and development of the last fifty years in China, limited resources are gradually reduced, a large number of long well stopping with less oil and less gas and production stopping occur, and as the crust movement is only intermittent, and with the continuous progress of oil and gas exploitation technology, a part of long well stopping is required to be further developed and utilized. However, individual lawless persons often cannot watch the long well by stopping the long well, the long well is stolen and damaged, and part of the well is subjected to blowout and oil spill, so that great hidden danger is brought to local environmental protection and safety, and various well anti-theft devices are generated.
The existing wellhead anti-theft device is characterized in that an iron plate is arranged outside a wellhead valve, an iron box is formed by electric welding and dead welding, or a cement box is directly covered outside the wellhead valve, but the anti-theft performance is poor, lawless persons can easily violently destroy the anti-theft device, then destroy the wellhead valve, and oil gas is stolen, and facilities such as wellhead sleeves and the like can be detached and stolen even, so that oil gas resources and equipment are stolen, and even the whole well is scrapped.
Disclosure of Invention
In view of the above, the application aims to provide an anti-theft device for a long-stop well wellhead, so as to solve the problems of poor anti-theft performance and easy destruction of the wellhead anti-theft device in the prior art.
In order to achieve the above purpose, the technical scheme of the application is realized as follows:
the utility model provides a long anti-theft device who stops well wellhead, includes burglary-resisting valve, burglary-resisting case, base, magnetic force anti-theft component, the one end and the oil well flange structural connection of burglary-resisting valve, the other end sets up the cross, the both ends of burglary-resisting valve all set up oil well theftproof clamp, the cross is kept away from three ports of burglary-resisting valve and is all set up the theftproof slips subassembly, the burglary-resisting case passes through magnetic force anti-theft component and is connected with the base in order to dismantle the mode, form the theftproof chamber between burglary-resisting case and the base, burglary-resisting valve, oil well flange structural, cross are set up in the theftproof chamber.
Further, the anti-theft valve is provided with a hand wheel, and the hand wheel is provided with an oil well valve anti-theft device.
Further, at least one port of the four-way valve is provided with a plug, one end of the plug, which is close to the four-way valve, is provided with a clamp head, and the clamp head is connected with the four-way valve.
Further, at least one port of the four-way valve is provided with a pressure gauge, the side wall of the anti-theft box is provided with an observation window, and the number of the pressure gauge can be read through the observation window.
Further, the oil well flange structure comprises an oil well upper flange and an oil well lower flange, the oil well lower flange is connected with a wellhead sleeve, one end of the oil well upper flange is connected with the oil well lower flange through a flange plate anti-theft device, the other end of the oil well upper flange is connected with an anti-theft valve, the base is connected with the oil well lower flange, and the connecting position of the base and the oil well lower flange is located in the anti-theft box.
Further, the base includes the bottom plate, the bottom plate sets up the mounting, the lateral wall of burglary-resisting case sets up magnetic force anti-theft component, magnetic force anti-theft component can be connected with the mounting with the dismantlement mode.
Further, an assembling side edge is arranged on the outer edge of the bottom plate, extends vertically upwards, and is provided with an assembling hole, so that the base can be connected with the oil well flange structure through the assembling hole; the inner wall of the anti-theft box is provided with a cushion block, and the cushion block is in butt joint limit with the upper plate surface of the bottom plate; the anti-theft box can cover the base in the inner cavity of the anti-theft box, and in the vertical direction, the bottom end of the anti-theft box is lower than the bottom surface of the base.
Further, the magnetic anti-theft assembly comprises an anti-theft jacket, an assembly sleeve, an eccentric bolt and a magnetic lock, wherein a hole body is formed in the side wall of the anti-theft box, the anti-theft jacket penetrates through the hole body, the assembly sleeve is arranged in the assembly cavity of the anti-theft jacket, the eccentric bolt is arranged in the inner cavity of the assembly sleeve, a stud part of the eccentric bolt extends towards the inside of the anti-theft box, and the stud part penetrates through the assembly sleeve and the anti-theft jacket and is connected with the fixing piece; the anti-theft outer sleeve is provided with a magnetic lock at one end far away from the anti-theft box, and a locking port of the magnetic lock can be locked with the outer wall of the anti-theft outer sleeve and seals the assembly cavity and the inner cavity of the assembly sleeve.
Further, the one end that theftproof overcoat inserted the theftproof case sets up the end plate, the first end and the end plate butt of dress group, the inner chamber of dress cover includes first cavity, second cavity, the internal diameter of first cavity is less than the internal diameter of second cavity, the inner wall that the dress was matched forms spacing shoulder, the nut external diameter of eccentric bolt is greater than the internal diameter of first cavity, is less than the internal diameter of second cavity, the nut can with spacing shoulder butt, the double-screw bolt part of eccentric bolt can run through first cavity, end plate in proper order to be connected with the base.
Further, the outer wall of the anti-theft jacket is provided with a clamping ring plate, the clamping ring plate can be abutted against the outer wall of the anti-theft box, the outer wall of the anti-theft jacket is provided with a locking groove, and a locking port of the magnetic lock can be locked with the locking groove.
Compared with the prior art, the antitheft device for the long-stop well mouth has the following advantages:
the application relates to an anti-theft device for a long stop well wellhead, which is characterized in that an anti-theft box is connected with a base through a magnetic anti-theft component, an anti-theft cavity is formed between the anti-theft box and the base, and an anti-theft valve, an oil well flange structure and a four-way are arranged in the anti-theft cavity to form a first anti-theft structure, so that the whole set of valve-pipe equipment outside the wellhead is subjected to integral anti-theft protection; meanwhile, the anti-theft structures are arranged at the two ends of the anti-theft valve and at the ports of the four-way valve, so that a second anti-theft structure is formed, and the anti-theft valve, the four-way valve and corresponding parts arranged at the ports of the four-way valve are subjected to heavy anti-theft protection.
Therefore, by arranging at least two anti-theft structures, on one hand, an illegal molecule is difficult to damage or dismantle the anti-theft box, so that the illegal molecule cannot directly touch valve-pipe equipment of a wellhead, and on the other hand, even if the illegal molecule can touch the valve-pipe equipment, the illegal molecule is difficult to dismantle or destroy corresponding parts arranged on the anti-theft valve, the four-way valve and the ports of the four-way valve; the application improves the anti-theft performance of the wellhead anti-theft device, so that the wellhead anti-theft device is difficult to destroy, the illegal molecule is prevented from stealing oil and gas resources, and the equipment such as wellhead casing pipes, valves and the like is prevented from being stolen.
In addition, the magnetic anti-theft assembly is used for locking in different positions of the magnetic core, and the lock can be opened only by using a key with specific magnetic force points, so that compared with a conventional lock, the lock has no friction and abrasion of any marble, correspondingly does not generate static electricity and collision spark during opening, avoids the possibility of inducing ignition and explosion, and ensures the safety of application in oilfield environments. Meanwhile, the corresponding magnetic structure adopts the permanent magnet, has good weather resistance, is beneficial to ensuring long-term safe and effective use of the anti-theft device, and enables the anti-theft device to be used in various outdoor environments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a schematic diagram of an anti-theft valve of an anti-theft device for a long stop wellhead according to an embodiment of the present application;
FIG. 2 is a top view of an anti-theft box of an anti-theft device for a long stop wellhead according to an embodiment of the present application (only the figure omits a handle);
FIG. 3 is a front view of an antitheft device for a long stop wellhead according to an embodiment of the present application on side A or side B of the antitheft box in FIG. 2;
FIG. 4 is a front view of an antitheft device for a long stop wellhead according to an embodiment of the present application on the side of the antitheft box C in FIG. 2;
FIG. 5 is a front view of an antitheft device for a long stop wellhead according to an embodiment of the present application on the antitheft box D side in FIG. 2;
FIG. 6 is a top view of a base of an anti-theft device for a long stop wellhead according to an embodiment of the present application;
FIG. 7 is a side view of a base of an anti-theft device for a long stop wellhead according to an embodiment of the present application;
FIG. 8 is a cross-sectional view of an anti-theft casing of an anti-theft device for a long stop wellhead according to an embodiment of the present application;
FIG. 9 is a sectional view of an assembly sleeve of an anti-theft box of an anti-theft device for a long stop wellhead according to an embodiment of the present application;
FIG. 10 is a cross-sectional view of an eccentric bolt of an anti-theft box of an anti-theft device for a long stop wellhead according to an embodiment of the present application;
FIG. 11 is a simplified schematic diagram of the structure of a magnetic lock (including a simplified schematic top view and a simplified cross-sectional view) of an anti-theft box of an anti-theft device for a long stop wellhead according to an embodiment of the present application;
fig. 12 is a schematic diagram of a magnetic key of an antitheft box of an antitheft device for a long stop wellhead according to an embodiment of the present application (including a schematic view from above, a schematic view from a cross-section).
Reference numerals illustrate:
1. plugging; 2. a four-way joint; 3. an anti-theft slip assembly; 4. anti-theft clamp for oil well; 5. a gate valve; 6. an upper flange of the oil well; 7. a clamp head; 8. a pressure gauge; 9. surface core repairing; 10. an oil well valve anti-theft device; 11. a flange anti-theft device; 12. a hand wheel; 13. a lower flange of the oil well; 14. an anti-theft box; 15. an anti-theft coat; 151. an end plate; 152. an assembly end; 153. an assembly chamber; 154. a through hole; 155. the clamping ring plate; 156. a locking groove; 16. a handle; 17. a cushion block; 18. an observation window; 19. a base; 20. a bottom plate; 21. assembling the side edges; 22. a mounting hole; 23. a fixing member; 24. a fitting hole; 25. assembling a set; 251. a first end; 252. a second end; 253. a first cavity; 254. a second cavity; 255. a limit shoulder; 26. an eccentric bolt; 261. a stud portion; 262. a screw cap; 263. an eccentric groove; 27. a magnetic lock; 271. locking the opening; 28. a magnetic key; 281. an insertion port.
Detailed Description
The inventive concepts of the present disclosure will be described below using terms commonly used by those skilled in the art to convey the substance of their work to others skilled in the art. These inventive concepts may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
The application will be described in detail below with reference to the drawings in connection with embodiments.
In order to solve the problem that the anti-theft performance of the wellhead anti-theft device in the prior art is poor and is easy to destroy, the embodiment provides an anti-theft device of a long stop wellhead, as shown in figures 1-12, the anti-theft device comprises an anti-theft valve, an anti-theft box 14, a base 19 and a magnetic anti-theft component, one end of the anti-theft valve is connected with an oil well flange structure, the other end of the anti-theft valve is provided with a four-way joint 2, two ends of the anti-theft valve are provided with oil well anti-theft clamps 4 for preventing the anti-theft valve from being stolen and destroyed, and three ports of the four-way joint 2 far away from the anti-theft valve are provided with anti-theft slip components 3 for anti-theft of the four-way joint 2 and corresponding components arranged at the ports of the four-way joint 2; the anti-theft box 14 is detachably connected with the base 19 through a magnetic anti-theft component, an anti-theft cavity is formed between the anti-theft box 14 and the base 19, and the anti-theft valve, the oil well flange structure and the four-way joint 2 are arranged in the anti-theft cavity.
The application connects the theft-proof box 14 with the base 19 through the magnetic theft-proof assembly, forms the theft-proof cavity between the two, and sets the theft-proof valve, the oil well flange structure and the four-way joint 2 in the theft-proof cavity to form the first theft-proof structure, and carries out the integral theft-proof protection to the whole set of valve-pipe equipment outside the wellhead; meanwhile, the anti-theft structures are arranged at the two ends of the anti-theft valve and at the ports of the four-way valve 2, so that a second anti-theft structure is formed, and the anti-theft valve, the four-way valve 2 and corresponding parts arranged at the ports of the four-way valve 2 are subjected to heavy anti-theft protection. Therefore, by arranging the two anti-theft structures, on one hand, the anti-theft box 14 is difficult to damage or dismantle by lawless persons, so that the lawless persons cannot directly handle valve-pipe equipment at a wellhead, and on the other hand, even if the lawless persons can touch the valve-pipe equipment, the anti-theft valve, the four-way valve 2 and corresponding parts arranged at the ports of the four-way valve 2 are difficult to dismantle or destroy; the application improves the anti-theft performance of the wellhead anti-theft device, so that the wellhead anti-theft device is difficult to destroy, the illegal molecule is prevented from stealing oil and gas resources, and the equipment such as wellhead casing pipes, valves and the like is prevented from being stolen. In addition, the magnetic anti-theft assembly is used for locking in different positions of the magnetic core, and the lock can be opened only by using a key with specific magnetic force points, so that compared with a conventional lock, the lock has no friction and abrasion of any marble, correspondingly does not generate static electricity and collision spark during opening, avoids the possibility of inducing ignition and explosion, and ensures the safety of application in oilfield environments. Meanwhile, the corresponding magnetic structure adopts the permanent magnet, has good weather resistance, is beneficial to ensuring long-term safe and effective use of the anti-theft device, and enables the anti-theft device to be used in various outdoor environments.
Preferably, the anti-theft slip assembly 3 and the oil well anti-theft clamp 4 can be formed by two hoops, corresponding pipelines or equipment are enclosed (or called enclosed), and two ends of the two hoops are connected through anti-theft fasteners, so that the anti-theft slip assembly 3 and the oil well anti-theft clamp 4 can not be easily removed while anti-theft corresponding equipment is carried out, and the anti-theft slip assembly and the oil well anti-theft clamp can only be opened through a specific opening tool. The anti-theft fastener adopted at a plurality of assembling positions in the application can be directly adopted in the prior art or purchased from the market, such as the anti-theft fastener which can be disassembled and assembled only through a specific opening tool, or the anti-theft fastener which can be assembled in the forward direction and can not be disassembled in the reverse direction.
The anti-theft valve is preferably a gate valve 5, the gate valve 5 is provided with a hand wheel 12, and the hand wheel 12 is provided with an oil well valve anti-theft device 10, so that the oil well valve anti-theft device 10 is additionally arranged on the hand wheel 12 of the valve on the basis that an illegal person is difficult to dismantle or destroy the anti-theft valve, the illegal person is prevented from opening and closing the anti-theft valve, the oil gas resource is prevented from being stolen, and meanwhile, the oil gas safety accident caused by the illegal person opening and closing the anti-theft valve improperly can be avoided. The oil well valve theft preventing device 10 is preferably a magnetic force theft preventing device, and is opened and closed by a specific magnetic force point number through the magnetic force device, and then the theft preventing valve can be operated by using the hand wheel 12.
The anti-theft plug comprises a four-way valve, a four-way valve 2, a plug 1, a clamp head 7, a plug 1 and a plug 1, wherein the plug 1 is arranged at least one port of the four-way valve 2, the clamp head 7 is connected with the four-way valve 2, so that the anti-theft performance of the plug 1 is improved by arranging the clamp head 7 at the plug 1 on the basis that the anti-theft slip assembly 3 is arranged at the port of the four-way valve where the plug 1 is arranged; meanwhile, when the long well stopping needs to be produced again, an operator opens the magnetic anti-theft assembly through specific equipment, removes the anti-theft box 14, removes the clamp head 7 and the oil well valve anti-theft device 10 through specific equipment, then uses a special wrench to open a plug, and connects an oil gas pipeline through the plug, so that the production and the recovery can be fast carried out again, and other anti-theft structures do not need to be removed. Preferably, the plug 1 itself is also provided with an anti-theft form, such as being eccentrically arranged or configured in a special-shaped structure, so that the plug 1 can only be opened by a special wrench.
At least one port of the four-way valve 2 is provided with a pressure gauge 8, the side wall of the anti-theft box 14 is provided with an observation window 18, and the indication of the pressure gauge 8 can be read through the observation window 18. Therefore, the oilfield operator can directly know the current state of the wellhead through the pressure gauge 8 without opening the anti-theft box 14, and the labor intensity of the oilfield operator is reduced. Meanwhile, through the double anti-theft function of the anti-theft box 14 and the anti-theft slip assembly 3, the pressure gauge 8 is prevented from being disassembled and stolen by lawless persons. In addition, for the assembly of the pressure gauge 8, a corresponding gauge compensating core 9 may be provided for connection or switching.
The oil well flange structure comprises an oil well upper flange 6 and an oil well lower flange 13, wherein the oil well lower flange 13 is connected with a wellhead sleeve, one end of the oil well upper flange 6 is connected with the oil well lower flange 13 through a flange plate anti-theft device 11, the other end of the oil well upper flange 6 is connected with an anti-theft valve (namely a gate valve 5 in the drawing), the base 19 is connected with the oil well lower flange 13, and the connecting position of the base 19 and the oil well lower flange 13 is positioned in an anti-theft box 14; therefore, the application is connected with oil well equipment such as an anti-theft valve and the like through the oil well flange structure, is also connected with the base 19, and is protected through the anti-theft box 14, so that the whole anti-theft device can be firmly connected on the whole after being assembled, relative displacement (or looseness) among parts can not occur, and the anti-theft performance is further improved.
The oil well anti-theft clamp 4 is arranged at the joint of the oil well lower flange 13 and the anti-theft valve, and the other oil well anti-theft clamp 4 is arranged at the joint of the anti-theft valve and the four-way valve 2 correspondingly. The flange anti-theft device 11 can be an anti-theft fastener, and can be disassembled and assembled only by a specific wrench; even the flange anti-theft device 11 can be an anti-theft fastener which can only be installed in the forward direction and can not be disassembled in the reverse direction.
For the anti-theft box 14 and the base 19, as shown in fig. 2-7, the base 19 includes a bottom plate 20, the bottom plate 20 is provided with a mounting hole 22, the opening size of the mounting hole 22 is slightly larger than that of the wellhead casing, so that the wellhead casing can penetrate through the mounting hole 22, meanwhile, other oil well equipment is located above the base 19, the opening size of the mounting hole 22 is at least smaller than that of the oil well lower flange 13, so that after the wellhead casing penetrates through the mounting hole 22, the mounting hole is blocked by space, and the base 19 cannot be taken out continuously from above. The outer edge of the bottom plate 20 is provided with a mounting side 21, the mounting side 21 extends vertically upwards, and the mounting side 21 is provided with a mounting hole 24, so that the base 19 can be connected with the lower flange 13 of the oil well through the mounting hole 24, for example, by using a fastener. The outer wall of the anti-theft case 14 may be provided with a handle 16 to facilitate the handling of the anti-theft case 14 by an operator and the corresponding disassembly and assembly operations.
The inner wall of the anti-theft box 14 is provided with a cushion block 17, and when the anti-theft box 14 and the bottom plate 20 are in a normal assembly state, the anti-theft box 14 can completely cover the base 19 in the inner cavity of the anti-theft box 14, namely, the bottom plate 20 and the assembly side 21 of the base 19 are both positioned in the inner cavity of the anti-theft box 14; meanwhile, in the vertical direction, the bottom end of the anti-theft box 14 is lower than the bottom surface of the base 19, so that after the anti-theft device is installed, people can only touch the anti-theft box 14 and the magnetic anti-theft component from the outside of the anti-theft device, the damage difficulty of lawless persons to other parts is increased, and the anti-theft performance of the anti-theft device is improved.
The cushion block 17 is limited by abutting with the upper plate surface of the bottom plate 20, so that the base 19 can only be positioned at the middle lower part of the inside of the anti-theft box 14, and enough space is reserved in the anti-theft box 14 for accommodating other oil well equipment (such as an anti-theft valve, a four-way valve 2 and the like).
The bottom plate 20 is provided with a fixing piece 23, the side wall of the anti-theft box 14 is provided with a magnetic anti-theft component, and the magnetic anti-theft component can be connected with the fixing piece 23 in a detachable mode, so that the assembly of the anti-theft box 14 and the bottom plate 20 is realized, and the anti-theft box 14 is prevented from being detached by lawless persons by utilizing the magnetic anti-theft component. Meanwhile, the anti-theft box 14 is made of steel plates with the thickness of 6mm, the bottom plate 20 is made of steel plates with the thickness of 8mm, the assembly side edges 21 are made of steel plates with the thickness of 10mm, and the damage difficulty of lawbreakers to corresponding parts is improved while the corresponding structure is ensured to have enough mechanical strength.
For the magnetic anti-theft assembly and the assembly condition thereof, the magnetic anti-theft assembly comprises an anti-theft jacket 15, an assembly sleeve 25, an eccentric bolt 26 and a magnetic lock 27, wherein a hole body is arranged on the side wall of the anti-theft box 14, the anti-theft jacket 15 penetrates through the hole body, the assembly sleeve 25 is arranged in the assembly cavity 153 of the anti-theft jacket 15, the eccentric bolt 26 is arranged in the inner cavity of the assembly sleeve 25, the stud part 261 of the eccentric bolt 26 extends towards the inside of the anti-theft box 14, so that the eccentric bolt 26 penetrates through the assembly sleeve 25 and the anti-theft jacket 15 and is connected with the fixing piece 23; the anti-theft outer sleeve 15 is provided with a magnetic lock 27 at one end far away from the anti-theft box 14, and a locking port 271 of the magnetic lock 27 can be locked with the outer wall of the anti-theft outer sleeve 15 and seal the inner cavities of the assembly cavity 153 and the assembly sleeve 25. In addition, the length of the fitting sleeve 25 in the direction of its central axis is smaller than the depth of the fitting cavity 153 of the anti-theft sheath 15, so that the magnetic lock 27 does not spatially interfere with the fitting sleeve 25 when it is covered outside the anti-theft sheath 15.
Thus, when the anti-theft box 14 is connected with the base 19 through the magnetic anti-theft assembly, two anti-theft structures are formed through the anti-theft outer sleeve 15, the assembly sleeve 25, the eccentric bolt 26 and the magnetic lock 27, firstly, the outer wall of the anti-theft outer sleeve 15 is locked through the magnetic lock 27, the assembly cavity 153 and the inner cavity of the assembly sleeve 25 are closed, and sufficient anti-theft protection can be provided for the eccentric bolt 26 to form a first anti-theft structure; on the basis of magnetic force anti-theft, as shown in fig. 11, the outer wall of the magnetic lock 27 can be set as smooth as possible, and is preferably circular, and the circular insertion opening 281 of the magnetic key 28 can be sleeved on the outer wall of the magnetic lock 27 only through the specific magnetic key 28 shown in fig. 12 to be magnetically opened, so that the magnetic lock 27 cannot be easily opened on the basis of no professional magnetic key for lawless persons, the outer wall of the magnetic lock 27 cannot be easily forced, and the magnetic lock 27 cannot be pulled out violently, thereby further effectively improving the anti-theft performance of the anti-theft device on the basis that people only touch the anti-theft box 14 and the magnetic anti-theft component (particularly the magnetic lock 27) from the outside of the anti-theft device. The magnetic force anti-theft devices such as the magnetic force anti-theft assembly 27 and the oil well valve anti-theft device 10 can be understood as magnetic force anti-theft locks, and the magnetic force anti-theft locks in the prior art can be directly adopted or customized purchasing can be carried out from the market, and the magnetic force anti-theft principle is described in the foregoing and is not repeated.
Secondly, set up eccentric bolt 26 in assembly cover 25, firstly be used for the connection of burglary-resisting case 14 with base 19, secondly because the space in the assembly cover 25 is less, set up eccentric bolt 26 in comparatively narrow and small space to can only use specific instrument to dismantle, constitute the second theftproof structure, make lawless persons have not used the unnecessary space of instrument, increased lawless persons' dismantlement degree of difficulty.
For the assembly of the anti-theft jacket 15, the assembly sleeve 25 and the eccentric bolt 26, as shown in fig. 8-10, one end of the anti-theft jacket 15, which is positioned outside the anti-theft box 14, is marked as an assembly end 152, one end of the anti-theft jacket 15, which is inserted into the anti-theft box 14, is provided with an end plate 151, and the end plate 151 is provided with a through hole 154; the assembly sleeve 25 is fitted into the assembly cavity 153 of the anti-theft sleeve 15 from the assembly end 152 of the anti-theft sleeve 15, and the first end 251 of the assembly sleeve 25 is closer to the inside of the anti-theft box 14 than the second end 252, i.e., when the assembly sleeve 25 is installed, the first end 251 of the assembly sleeve 25 is inserted into the assembly cavity 153 of the anti-theft sleeve 15 until the first end 251 of the assembly sleeve 25 abuts the end plate 151, so that the assembly sleeve 25 is not pushed into the inside of the anti-theft box 14. The inner cavity of the assembly sleeve 25 comprises a first cavity 253 and a second cavity 254, the inner diameter of the first cavity 253 is smaller than the inner diameter of the second cavity 254, so that a limit shoulder 255 is formed on the inner wall of the assembly sleeve 25, the outer diameter of a nut 262 of the eccentric bolt 26 is larger than the inner diameter of the first cavity 253, but smaller than the inner diameter of the second cavity 254, so that the eccentric bolt 26 is limited by the limit shoulder 255 when penetrating into the inner cavity of the assembly sleeve 25, excessive screwing of the eccentric bolt 26 is avoided, and the stud 261 of the eccentric bolt 26 can be well connected with the base 19 while the nut 262 is abutted with the limit shoulder 255. For the eccentric bolt 26, an eccentric groove 263 is provided at an end of the nut 262 remote from the stud portion 261, and the eccentric bolt 26 can be rotated only by inserting a special tool into the eccentric groove 263. The stud portion 261 of the eccentric bolt 26 can sequentially pass through the first cavity 253, the through hole 154 of the end plate 151, and be connected with the base 19.
The outer wall of the anti-theft jacket 15 is provided with the clamping ring plate 155, and the clamping ring plate 155 can be abutted with the outer wall of the anti-theft box 14, so that when the eccentric bolt 26 is connected with the base 19, the clamping ring plate 155 is abutted with the anti-theft box 14, the anti-theft jacket 15 can be firmly assembled with the anti-theft box 14, cannot be detached from the anti-theft box 14 by lawless persons, and the anti-theft performance of the magnetic anti-theft assembly is improved.
The outer wall of the anti-theft jacket 15 is provided with a locking groove 156, and a locking opening 271 of the magnetic lock 27 can be locked with the locking groove 156. Wherein, the locking groove 156 is positioned between the assembly end 152 of the anti-theft jacket 15 and the clamping ring plate 155 and is positioned outside the anti-theft box 14, thereby being convenient for assembling the magnetic lock 27.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the application.
Claims (8)
1. The anti-theft device for the long well stop wellhead is characterized by comprising an anti-theft valve, an anti-theft box (14), a base (19) and a magnetic anti-theft assembly, wherein one end of the anti-theft valve is connected with an oil well flange structure, the other end of the anti-theft valve is provided with a four-way joint (2), two ends of the anti-theft valve are provided with oil well anti-theft clamps (4), three ports of the four-way joint (2), which are far away from the anti-theft valve, are provided with anti-theft slip assemblies (3), the anti-theft box (14) is connected with the base (19) in a detachable mode through the magnetic anti-theft assembly, an anti-theft cavity is formed between the anti-theft box (14) and the base (19), and the anti-theft valve, the oil well flange structure and the four-way joint (2) are arranged in the anti-theft cavity;
the oil well flange structure comprises an oil well lower flange (13), the base (19) comprises a bottom plate (20), the bottom plate (20) is provided with a fixing piece (23), the side wall of the anti-theft box (14) is provided with a magnetic anti-theft component, the magnetic anti-theft component can be connected with the fixing piece (23) in a detachable mode, the outer edge of the bottom plate (20) is provided with an assembling side edge (21), the assembling side edge (21) is provided with an assembling hole (24), the base (19) is connected with the oil well lower flange (13) through the assembling hole (24), and the connecting position of the base (19) and the oil well lower flange (13) is located inside the anti-theft box (14); a cushion block (17) is arranged on the inner wall of the anti-theft box (14), and the cushion block (17) is in butt joint limit with the upper plate surface of the bottom plate (20); in the vertical direction, the bottom end of the anti-theft box (14) is lower than the bottom surface of the base (19).
2. The antitheft device for a long stop wellhead according to claim 1, characterized in that the antitheft valve has a hand wheel (12), the hand wheel (12) being provided with an oil well valve antitheft device (10).
3. The antitheft device for a long stop wellhead according to claim 1, wherein at least one port of the four-way valve (2) is provided with a plug (1), one end of the plug (1) close to the four-way valve (2) is provided with a clamp head (7), and the clamp head (7) is connected with the four-way valve (2).
4. The antitheft device of a long stop wellhead according to claim 1, characterized in that at least one port of the four-way (2) is provided with a pressure gauge (8), the side wall of the antitheft box (14) is provided with an observation window (18), and the indication of the pressure gauge (8) can be read through the observation window (18).
5. The antitheft device for a long stop wellhead according to claim 1, wherein the oil well flange structure comprises an oil well upper flange (6) and an oil well lower flange (13), the oil well lower flange (13) is connected with a wellhead sleeve, one end of the oil well upper flange (6) is connected with the oil well lower flange (13) through a flange antitheft device (11), and the other end of the oil well upper flange (6) is connected with an antitheft valve.
6. The antitheft device of the long well stop wellhead according to claim 1, characterized in that the magnetic antitheft assembly comprises an antitheft jacket (15), an assembling sleeve (25), an eccentric bolt (26) and a magnetic lock (27), a hole body is arranged on the side wall of the antitheft box (14), the antitheft jacket (15) penetrates through the hole body, the assembling sleeve (25) is arranged in an assembling cavity (153) of the antitheft jacket (15), the eccentric bolt (26) is arranged in an inner cavity of the assembling sleeve (25), a stud part (261) of the eccentric bolt (26) extends towards the inside of the antitheft box (14), and the stud part (261) penetrates through the assembling sleeve (25) and the antitheft jacket (15) and is connected with a fixing piece (23); one end of the anti-theft jacket (15) far away from the anti-theft box (14) is provided with a magnetic lock (27), and a locking port (271) of the magnetic lock (27) can be locked with the outer wall of the anti-theft jacket (15) and seal the inner cavities of the assembly cavity (153) and the assembly jacket (25).
7. The antitheft device of a long well stopping wellhead according to claim 6, characterized in that an end plate (151) is arranged at one end of the antitheft jacket (15) inserted into the antitheft box (14), a first end (251) of the assembling jacket (25) is abutted against the end plate (151), an inner cavity of the assembling jacket (25) comprises a first cavity (253) and a second cavity (254), the inner diameter of the first cavity (253) is smaller than the inner diameter of the second cavity (254), a limit shoulder (255) is formed on the inner wall of the assembling jacket (25), the outer diameter of a nut (262) of the eccentric bolt (26) is larger than the inner diameter of the first cavity (253) and smaller than the inner diameter of the second cavity (254), the nut (262) can be abutted against the limit shoulder (255), and a stud portion (261) of the eccentric bolt (26) can sequentially penetrate through the first cavity (253) and the end plate (151) and be connected with the base (19).
8. The antitheft device of the long well stop wellhead according to claim 6, characterized in that a clamping ring plate (155) is arranged on the outer wall of the antitheft jacket (15), the clamping ring plate (155) can be abutted against the outer wall of the antitheft box (14), a locking groove (156) is arranged on the outer wall of the antitheft jacket (15), and a locking notch (271) of the magnetic lock (27) can be locked with the locking groove (156).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311030502.4A CN116734033B (en) | 2023-08-16 | 2023-08-16 | Antitheft device for long stop well mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311030502.4A CN116734033B (en) | 2023-08-16 | 2023-08-16 | Antitheft device for long stop well mouth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116734033A CN116734033A (en) | 2023-09-12 |
| CN116734033B true CN116734033B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311030502.4A Active CN116734033B (en) | 2023-08-16 | 2023-08-16 | Antitheft device for long stop well mouth |
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| Country | Link |
|---|---|
| CN (1) | CN116734033B (en) |
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| CN212642672U (en) * | 2020-06-11 | 2021-03-02 | 张训锋 | Detachable oil extraction well head anti-theft box |
| CN216157630U (en) * | 2021-07-29 | 2022-04-01 | 建湖县博伟机械有限公司 | Fast-assembling theftproof wellhead assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT304975B (en) * | 1970-10-23 | 1973-02-12 | Vat Ag Fuer Vakuum App Technik | Quick-closing valve with electromagnetic release |
| CN2316454Y (en) * | 1997-05-12 | 1999-04-28 | 中原石油勘探局机械修造十三厂 | Full-sealed anti-theft Christmas tree |
| CN2525247Y (en) * | 2001-08-24 | 2002-12-11 | 廖启安 | Simple anti-theft well head device |
| CN2545359Y (en) * | 2002-04-23 | 2003-04-16 | 胜利油田胜利石油化工建设有限责任公司劳动服务公司 | Theftproof collar clamp for oil production wellhead |
| CN2866800Y (en) * | 2005-12-03 | 2007-02-07 | 张超 | Wellhead reducing antitheft cross used for oil field horizontal well |
| CN200996278Y (en) * | 2007-01-08 | 2007-12-26 | 姚向青 | Safety air wellhead device |
| CN101100932A (en) * | 2007-06-15 | 2008-01-09 | 高林森 | High-pressure water injection well head device |
| CN102434122A (en) * | 2011-08-17 | 2012-05-02 | 中国石油天然气股份有限公司 | Anti-theft wellhead device |
| CN212642672U (en) * | 2020-06-11 | 2021-03-02 | 张训锋 | Detachable oil extraction well head anti-theft box |
| CN216157630U (en) * | 2021-07-29 | 2022-04-01 | 建湖县博伟机械有限公司 | Fast-assembling theftproof wellhead assembly |
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|---|---|
| CN116734033A (en) | 2023-09-12 |
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